「Epi practicals - 12 April 2021」の版間の差分

2021年4月12日 (月) 15:09時点における版

Is this test useful

Practical - HIV

	With disease	Without disease
test positive	152	20
test negative	8	980

Q2
- Sensitivity=[math]\displaystyle{ \frac{152}{160} = 0.95 }[/math]
- Specificity=[math]\displaystyle{ \frac{980}{1000} = 0.98 }[/math]

- - Positive predictive value=[math]\displaystyle{ \frac{38}{38+1999.2}=0.187 }[/math]
  - Negative predictive value=[math]\displaystyle{ \frac{97960.8}{2+97960.8}=0.999 }[/math]

- - Positive predictive value=[math]\displaystyle{ \frac{316.35}{316.35+13.34}=0.959 }[/math]
  - Negative predictive value=[math]\displaystyle{ \frac{653.66}{1999.2+653.66}=0.246 }[/math]

@@ 49行目: / 49行目: @@
 **b)
+{|class="wikitable"
+|-
+!
+!With disease
+!Without disease
+|-
+!test positive
+|316.35
+|1999.2
+|-
+!test negative
+|13.34
+|653.66
+|-
+!sum
+|333
+|667
+|}
+***Positive predictive value=<math>\frac{316.35}{316.35+13.34}=0.959</math>
+***Negative predictive value=<math>\frac{653.66}{1999.2+653.66}=0.246</math>